ONETOC2 File Type

- The quick facts

What are ONETOC2 files and how to open them

Are you having problems opening an ONETOC2 file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is an ONETOC2 file?

An .ONETOC2 file is an OneNote table of contents file.

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open ONETOC2 files

Important: Different programs may use files with the ONETOC2 file extension for different purposes, so unless you are sure which format your ONETOC2 file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 4 different ONETOC2 openers which you will find listed below.

Last updated: December 15, 2021

Various apps that use files with this extension

These apps are known to open certain types of ONETOC2 files. Remember, different programs may use ONETOC2 files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Microsoft OneNoteMicrosoft OneNoteUser submitted
Microsoft OfficeMicrosoft OfficeUser submitted
Microsoft Office Mondo - EnglishMicrosoft Office Mondo - EnglishUser submitted
V-ToolsV-ToolsUser submitted

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